JP4274837B2 - Rim and tire assembly mounting method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting method and apparatus for mounting an assembly of one side, another side rim and a pneumatic tire connected to each other on a mounted member.
[0002]
[Prior art]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-187852
[0003]
In general, inspection of a pneumatic tire has been performed by a method as described in Patent Document 1. That is, after loading a pneumatic tire between lower rims on an inspection machine such as a uniformity machine, the lower rim is raised and the lower rim is seated on the lower bead portion of the pneumatic tire. After the seating, the lower rim is further raised until the upper rim is seated on the upper bead portion of the pneumatic tire. Next, after the fluid was filled between the pneumatic tire and the upper and lower rims, the pneumatic tire, the lower and upper rims were inspected for the pneumatic tire while integrally rotating around the tire central axis. .
[0004]
However, in such a method, the pneumatic tire, which is a preparatory work for inspection, is seated on the lower rim and filled with fluid in the inspection machine. Therefore, even if the inspection time itself is short, the pneumatic tire is used. There is a problem that the cycle time from the delivery of the first tire to the next delivery of the pneumatic tire becomes longer, resulting in a lower work efficiency.
[0005]
In order to solve such a problem, the applicant of the present patent application disclosed in Japanese Patent Application No. 2002-42631, a pneumatic tire, a one-side rim on which one side bead portion of the pneumatic tire is seated, and the pneumatic tire. A step of carrying a rim and tire assembly comprising a side bead portion and a rim and tire assembly, which is detachably connected to the one side rim, to a mounted member constituting a part of an inspection machine or the like; A first fluid passage formed in the mounted member and a second fluid passage formed in the rim / tire assembly by placing the carried rim / tire assembly at a predetermined position of the mounted member; , And proposed a method in which fluid is guided between the one-side and other-side rims and the pneumatic tire through the first and second fluid passages.
[0006]
[Problems to be solved by the invention]
However, in such a method and apparatus for mounting a rim / tire assembly, when the rim / tire assembly is mounted on a mounted member, the rim / tire assembly is simply placed on the mounted member. Therefore, the mounting position of the rim / tire assembly with respect to the mounted member is likely to be displaced, and if such a displacement occurs, the fluid guided between the one side rim and the other side rim and the pneumatic tire. There is a problem in that there is a risk of leakage, and slippage in the rotational direction may occur between the rim / tire assembly and the mounted member during inspection.
[0007]
An object of the present invention is to provide a mounting method and apparatus for a rim / tire assembly that can easily prevent fluid leakage and rotational slippage.
[0008]
[Means for Solving the Problems]
The first object is that the pneumatic tire, the one-side rim on which the one-side bead portion of the pneumatic tire is seated, the other-side bead portion of the pneumatic tire are seated, A step of carrying a rim / tire assembly composed of the other rim detachably connected to the side rim into the mounted member, and the loaded rim / tire assembly is moved to a predetermined position of the mounted member by the mounting means. The first fluid passage formed in the member to be attached and the second fluid passage formed in the rim / tire assembly are communicated with each other, and one side and the other side rim are communicated through the first and second fluid passages. The fluid between the tire and the pneumatic tire And a step of switching the on-off valve provided in the second fluid passage to a closed state when the rim / tire assembly is separated from the mounted member by the conveying means. This can be achieved by the mounting method of the rim / tire assembly.
[0009]
Second, the pneumatic tire, the one-side rim on which the one-side bead portion of the pneumatic tire is seated, and the other-side bead portion of the pneumatic tire are seated and attached to and detached from the one-side rim. Conveying means for carrying a rim / tire assembly composed of the other rims connected to each other to the attached member, and attaching means for attaching and fixing the carried rim / tire assembly at a predetermined position of the attached member. And a first fluid passage formed in the rim / tire assembly and connected to the first fluid passage formed in the mounted member to guide the fluid from the first fluid passage between the one side rim and the other side rim and the pneumatic tire. With two fluid passages A mounting device for a rim / tire assembly, wherein the second fluid passage is provided with an opening / closing valve that is closed when the rim / tire assembly is detached from the mounted member by the conveying means. This can be achieved by the mounting device for the rim / tire assembly.
[0010]
In the above-described invention, since the loaded rim / tire assembly is mounted and fixed at a predetermined position of the mounted member by the mounting means, the mounting position of the rim / tire assembly with respect to the mounted member is shifted. As a result, leakage of the fluid guided between the one-side and other-side rims and the pneumatic tire through the first and second fluid passages is prevented. Further, as described above, the mounting means is mounted and fixed, so even if an inertial force or a braking force is applied to the rim / tire assembly during inspection or the like, there is slip in the rotational direction between the mounted member and the mounted member. This does not occur, thereby improving the inspection accuracy and the like.
[0011]
The In addition , When the rubber / tire assembly is detached from the mounted member, the on-off valve is closed, so that the rim / tire assembly can be transported while the internal pressure is filled.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
1 and 2, reference numeral 11 denotes a vulcanized pneumatic tire that is inspected by an inspection machine 12 such as a uniformity machine or a balance inspection machine. One side of the pneumatic tire 11, other side bead parts 13 and 14 Are seated on one side and the other side rims 15 and 16, respectively, which are detachably connected. That is, the one side and other side rims 15 and 16 can be separated, but after the one side bead portion 13 of the pneumatic tire 11 is seated on the one side rim 15, the pneumatic tire 11 is placed on the other side rim 16. The other-side bead portion 14 can be seated, and then the one-side and other-side rims 15 and 16 can be connected by connecting means (not shown).
[0013]
When one side of the pneumatic tire 11, one side on which the other side bead portions 13 and 14 are seated, and the other side rims 15 and 16 are connected to each other, the pneumatic tire 11, one side, and the other side rim are connected. 15 and 16 are integrated to form a rim / tire assembly 17. It should be noted that the connection and disconnection of the one-side and other-side rims 15 and 16 as described above are performed at the rim assembly and rim unpacking station apart from the inspection machine 12.
[0014]
Reference numeral 20 denotes a frame of the inspection machine 12. A substantially cylindrical holding member 21 is fixed to the frame 20, and a spindle shaft 22 as a mounted member extending in the vertical direction is inserted into the holding member 21. At the same time, the holding member 21 is rotatably supported by a plurality of bearings 23 separated in the axial direction. 24 is a pulley fixed to the lower end portion of the spindle shaft 22, and a belt 25 is stretched between the pulley 24 and a pulley fixed to an output shaft of a motor (not shown). During inspection, the shaft 22 receives a driving force from a motor and rotates around a vertical axis at a predetermined rotational speed.
[0015]
28, the rim / tire assembly 17 is transported from the rim assembly station to the inspection machine 12, more specifically, directly above the spindle shaft 22, and from the spindle shaft 22 to another inspection machine or rim unpacking station. The conveying device 28 has a gripping claw 29 for gripping the rim / tire assembly 17, specifically the other rim 16. The conveying means 28 conveys the rim / tire assembly 17 in a state where the central axis of the pneumatic tire 11 is vertical, the one rim 15 is on the lower side, and the other rim 16 is on the upper side.
[0016]
The upper end of the spindle shaft 22 is formed with a storage hole 31 that is coaxial with the spindle shaft 22 and opened upward, and the inner periphery of the upper end of the storage hole 31 is composed of a part of a conical surface that expands upward. A tapered surface 32 is formed. Reference numeral 33 denotes a bottomed cylindrical cylinder member that is housed and fixed in a housing hole 31 on the back side (lower side) of the taper surface 32 and that is open at the upper side. A partition wall 34 is integrally formed. Reference numeral 35 denotes a vertical pipe that penetrates the bottom wall of the cylinder member 33 and the partition wall 34 in the vertical direction and constitutes a part of the spindle shaft 22, and guides fluid such as air and inert gas into the vertical pipe 35. A first fluid passage 37 is formed. Further, a rotary valve 36 capable of supplying fluid from a fluid source (not shown) into the rotating vertical pipe 35 (first fluid passage 37) is attached to the lower end of the vertical pipe 35.
[0017]
39 is a holder fixed to the upper end of the vertical pipe 35 and loosely fitted in the cylinder member 33. The holder 39 is integrally formed with the cylindrical portion 40 coaxial with the cylinder member 33 and the lower end of the cylindrical portion 40. In addition, the inner end in the radial direction is composed of a disc portion 41 fixed to the outer periphery of the upper end of the vertical pipe 35. Reference numeral 42 denotes a plurality of ball holes formed in the cylindrical portion 40 at equal distances in the circumferential direction, and these ball holes 42 penetrate the cylindrical portion 40 in the radial direction. Balls 43 that are movable in the radial direction in the ball holes 42 are inserted into the respective ball holes 42, and the diameter D of these balls 43 is slightly larger than the wall thickness t of the holder 39, specifically the cylindrical portion 40. As a result, some of these balls 43 protrude from the inner periphery or outer periphery of the holder 39 (cylindrical portion 40).
[0018]
46 is a slider having a cylindrical portion 47 fitted to the outside of the holder 39 (cylindrical portion 40), and the inner periphery of this cylindrical portion 47 is slidably engaged with the outer periphery of the cylindrical portion 40, while The outer periphery is slidably engaged with the inner periphery of the cylinder member 33. The cylindrical portion 47 is formed with a plurality of retraction holes 48 (the same number as the ball holes 42) equidistant from each other in the circumferential direction. The retraction holes 48 are coaxial with the ball holes 42 by the movement of the slider 46. Then, when the ball 43 moves outward in the radial direction, a part of the ball 43 is inserted.
[0019]
At this time, the ball 43 is immersed in the ball hole 42 and the retracting hole 48, and hardly protrudes from the inner periphery of the holder 39 (cylindrical portion 40). On the other hand, when the slider 46 moves in the axial direction (downward) from the state where the ball hole 42 and the retraction hole 48 are coaxial as described above, the ball 43 engages with the inner periphery of the slider 46 (cylindrical portion 47). It is pushed inward in the radial direction, and a part thereof projects radially inward from the inner periphery of the holder 39 (cylindrical portion 40).
[0020]
The slider 46 has a disc portion 51 as a piston extending radially inward from the lower end of the cylindrical portion 47, and the vertical pipe 35 is slidably inserted into the central portion of the disc portion 51. Yes. 52 is a disc spring interposed between the disc portion 41 of the holder 39 and the disc portion 51 of the slider 46. The disc spring 52 applies a downward biasing force to the slider 46. 53 is a cylinder chamber defined between the disc portion 51 of the slider 46 and the partition wall 34 of the cylinder member 33. The cylinder chamber 53 is formed in the spindle shaft 22 and has one end connected to the rotary valve 36. The other end of the connected fluid passage 54 communicates. When a fluid is supplied to the cylinder chamber 53 through the fluid passage 54, the slider 46 rises against the urging force of the disc spring 52, and the ball 43 can be retracted into the retraction hole 48.
[0021]
57 is a rim / tire assembly 17, more specifically, a substantially cylindrical protrusion formed at the center of one rim 15 and protruding outward in the axial direction (downward during conveyance). When the rim / tire assembly 17 is carried to the spindle shaft 22 by the means 28, it is inserted into the storage hole 31. Here, the outer periphery of the base end portion (upper end portion) of the projecting portion 57 constitutes a tapered surface 58 formed of a part of a conical surface having the same taper angle as the tapered surface 32. As a result, this tapered surface 58 When the rim / tire assembly 17 is carried into the spindle shaft 22, the tapered surface 32 serves as a contact portion in surface contact with each other.
[0022]
The protruding portion 57 has a cylindrical connecting portion 60 whose outer diameter is slightly smaller than the inner periphery of the cylindrical portion 40 of the holder 39 on the front end side (lower end portion). When the tapered surfaces 32 and 58 are brought into surface contact with each other by carrying in the tire assembly 17, the holder 39, specifically, the cylindrical portion 40 is inserted. Further, when the tapered surfaces 32 and 58 are in surface contact with each other on the outer periphery of the connecting portion 60, a circumferential groove-like recess 61 is formed to face the ball 43, and the ball 43 is formed by the slider 46 in the recess 61. Is pushed inward in the radial direction, a part of the ball 43 is inserted, and the rim / tire assembly 17 carried into the spindle shaft 22 is mounted and fixed at a predetermined position of the spindle shaft 22.
[0023]
The holder 39, the ball 43, the slider 46, and the recess 61 formed on the outer surface of the connecting portion 60 provided on the spindle shaft 22 as a whole are configured so that the rim / tire assembly 17 carried into the spindle shaft 22 is connected to the spindle shaft 22 as a whole. A mounting means 62 for mounting and fixing at a predetermined position is configured. If the mounting means 62 is constituted by the holder 39, the ball 43, the slider 46, and the recess 61 in this way, the rim / tire assembly 17 can be mounted and fixed to the spindle shaft 22 in a very short time.
[0024]
In the rim / tire assembly 17 including the protruding portion 57, one end communicates with the fluid chamber 63 surrounded by the pneumatic tire 11, one side, and the other side rim 15, 16, and the other end of the protruding portion 57. A second fluid passage 65 opened at the front end surface is formed, and this second fluid passage 65 communicates with the first fluid passage 37 when the rim / tire assembly 17 is mounted and fixed to the spindle shaft 22. An opening / closing valve 66 is provided at the other end of the second fluid passage 65, that is, a portion located in the connecting portion 60, and the opening / closing valve 66 is supported by a protrusion 57 so as to be movable in the axial direction. And a spring 69 that urges the valve body 67 outward in the axial direction and presses the valve body 67 against the valve seat 68, and no upward external force (valve opening force) is applied to the valve body 67. Normally closed.
[0025]
Reference numeral 72 denotes an opening member having a lower end fixed to the inner periphery of the upper end of the vertical pipe 35, and an upper portion of the opening member 72 protrudes upward from the upper surfaces of the vertical pipe 35 and the disc portion 41. As a result, when the protrusion 57 is inserted into the storage hole 31 and the rim / tire assembly 17 is mounted and fixed to the spindle shaft 22, the release member 72 opposes the valve element 67 against the spring 69 in the axial direction (upper side). ) To switch the on-off valve 66 from the closed state to the open state.
[0026]
When the on-off valve 66 is in the open state in this way, fluid is guided from the fluid source to the fluid chamber 63 through the first and second fluid passages 37 and 65 communicating with each other, and the pneumatic tire 11 is in a predetermined shape at the time of inspection. Inflate until. If the opening / closing valve 66 is provided in the second fluid passage 65 and the opening member 72 for switching the opening / closing valve 66 to the spindle shaft 22 is provided in this way, the rim / tire assembly 17 is detached from the spindle shaft 22. During normal operation, the on-off valve 66 is closed, so that the rim / tire assembly 17 can be transported while the fluid chamber 63 is filled with the internal pressure.
[0027]
76 is a ring-shaped piston provided between the bottom wall of the cylinder member 33 and the partition wall 34. The outer periphery of the piston 76 slides on the inner periphery of the cylinder member 33, and the inner periphery thereof slides on the outer periphery of the vertical pipe 35. It is movably engaged. Reference numeral 77 denotes a disc spring installed between the piston 76 and the partition wall 34. The disc spring 77 applies a downward biasing force to the piston 76.
[0028]
78 is a contact ring fixed to the outer periphery of the vertical pipe 35, and a piston 76 pushed down by a disc spring 77 can contact the contact ring 78. At this contact, the disc spring 77 and the piston The downward urging force from 76 is transmitted to the protrusion 57 (rim / tire assembly 17) through the vertical pipe 35, the holder 39, and the ball 43, and the tapered surfaces 58 and 32 are brought into pressure contact with each other. Thereby, the mounting accuracy of the rim / tire assembly 17 with respect to the spindle shaft 22, for example, the concentricity is effectively improved.
[0029]
79 is a cylinder chamber defined between the piston 76 and the bottom wall of the cylinder member 33, and a branch passage 80 branched from the middle of the fluid passage 54 is connected to the cylinder chamber 79. When fluid is supplied to the cylinder chamber 79 through the fluid passage 54 and the branch passage 80, the piston 76 rises against the biasing force of the disc spring 77 and is transmitted from the disc spring 77 to the vertical pipe 35. The power is cut off on the way. The piston 76, the disc spring 77, and the contact ring 78 described above constitute force applying means 81 that applies a pressing force that presses the tapered surfaces 32 and 58 against the rim / tire assembly 17 together.
[0030]
Next, the operation of the first embodiment of the present invention will be described.
Now, it is assumed that the rim / tire assembly 17 is not attached to the spindle shaft 22 of the inspection machine 12. At this time, the fluid is supplied from the fluid source to the cylinder chambers 53 and 79 through the fluid passage 54 and the branch passage 80. As a result, both the slider 46 and the piston 76 rise against the disc springs 52 and 77. . Here, as described above, when the slider 46 is raised, the retraction hole 48 and the ball hole 42 are coaxial, so that the ball 43 is immersed in the ball hole 42 and the retraction hole 48, and the holder It hardly protrudes from the inner periphery of 39 (cylindrical portion 40). On the other hand, when the piston 76 is raised, the piston 76 is detached from the abutment ring 78, and as a result, the urging force from the disc spring 77 is not transmitted to the vertical pipe 35.
[0031]
Next, after the rim and tire assembly 17 assembled at the rim assembly station is gripped by the transport means 28, the pneumatic tire 11 is transported to the spindle shaft 22 of the inspection machine 12 in a state where the central axis of the pneumatic tire 11 is vertical. The protrusion 57 is inserted into the storage hole 31. During this insertion, the valve element 67 is pushed inward in the axial direction (upper side) while compressing the spring 69 by the opening member 72, and the on-off valve 66 is switched from the closed state to the open state. When the taper surface 58 of the protrusion 57 abuts on the taper surface 32 of the spindle shaft 22 and the rim / tire assembly 17 is carried into a predetermined position of the spindle shaft 22, the first fluid passage 37 of the spindle shaft 22 and The second fluid passage 65 of the rim / tire assembly 17 communicates with each other. At this time, the conveying means 28 releases the rim / tire assembly 17 from gripping and moves to the next work position.
[0032]
Next, the fluid is discharged from the cylinder chambers 53 and 79 through the fluid passage 54 and the branch passage 80, and the slider 46 is pushed down by the biasing force of the disc spring 52 as the fluid is discharged. As a result, the ball 43 is pushed by the inner periphery of the slider 46 (cylindrical portion 47) and moves radially inward in the ball hole 42, so that a part of the ball 43 is inserted into the recess 61 and carried into the spindle shaft 22. The rim / tire assembly 17 is mounted and fixed at a predetermined position on the spindle shaft 22 in a moment.
[0033]
On the other hand, the piston 76 is pressed down by the urging force of the disc spring 77 by the fluid discharge from the cylinder chamber 79 described above, and the piston 76 contacts the contact ring 78. As a result, the downward biasing force of the disc spring 77 is transmitted to the projecting portion 57 (rim / tire assembly 17) via the vertical pipe 35, the holder 39, and the ball 43, and the tapered surface 58 is pressed against the tapered surface 32. Let
[0034]
Thereafter, a fluid having a predetermined pressure is supplied from the fluid source into the fluid chamber 63 through the first and second fluid passages 37 and 65, and the pneumatic tire 11 is inflated to a predetermined shape at the time of inspection. Next, the motor is operated to transmit the rotational driving force to the spindle shaft 22 via the belt 25, and the spindle shaft 22 and the rim / tire assembly 17 are integrally rotated around a vertical axis at a predetermined rotational speed. However, for example, the uniformity of the pneumatic tire 11 is inspected by an inspection means (not shown).
[0035]
At this time, since the rim / tire assembly 17 carried into the spindle shaft 22 as described above is mounted and fixed at a predetermined position of the spindle shaft 22 by the mounting means 62, the rim / tire assembly 17 with respect to the spindle shaft 22 is fixed. There is no deviation in the mounting position, and as a result, leakage of the fluid guided to the fluid chamber 63 through the first and second fluid passages 37 and 65 is prevented.
[0036]
Further, since the rim / tire assembly 17 is mounted and fixed to the spindle shaft 22 by the mounting means 62, the rim / tire assembly can be applied even if inertial force and braking force are applied to the rim / tire assembly 17 during inspection. There is no rotational slip between the shaft 17 and the spindle shaft 22, thereby improving the inspection accuracy.
[0037]
At this time, since the configuration is as described above, the spindle shaft 22 and the rim / tire assembly are not affected even if an external force (lateral force) for inspection acts on the rim / tire assembly 17 when stationary or rotating. The three-dimensional body 17 hardly bends and can improve reliability. Furthermore, in this embodiment, since the mounting and fixing of the rim / tire assembly 17 to the spindle shaft 22 is performed by the biasing force of the disc spring 52, the mounting is possible even if a power failure, fluid source failure, etc. occur. Fixation can be maintained, which improves safety.
[0038]
When the inspection of the pneumatic tire 11 is completed in the inspection machine 12 as described above, fluid is supplied to the cylinder chambers 53 and 79 through the fluid passage 54 and the branch passage 80, and the slider 46 and the piston 76 are raised to raise the rim and tire. The assembly 17 is released from the mounting and fixing by the mounting means 62, and the press contact between the tapered surface 58 and the tapered surface 32 is finished.
[0039]
Next, after the rim / tire assembly 17 is gripped by the transport means 28, the rim / tire assembly 17 is transported to the next step, for example, a balance inspection machine, a catching (trimming) machine, or a rim unpacking station. At this time, since the valve element 67 is pressed against the valve seat 68 by the spring 69 and the on-off valve 66 is automatically switched to the closed state, the rim / tire assembly 17 is conveyed while the fluid chamber 63 is filled with the internal pressure. be able to.
[0040]
FIG. 3 is a diagram showing a second embodiment of the present invention. In this embodiment, the disc spring 52, the cylinder chamber 53, and the contact ring 78 in the first embodiment are omitted, and the slider 46 and the piston 76 are connected in a cylindrical shape whose inner periphery is in sliding contact with the vertical pipe 35. Further, an annular protrusion 85 capable of contacting the upper surface of the cylindrical portion 40 of the holder 39 is formed on the inner periphery of the upper end portion of the cylindrical portion 47 of the slider 46, and the fluid passage 54 is connected to the cylinder chamber 79. Communicated only to.
[0041]
In this embodiment, when the rim / tire assembly 17 is mounted and fixed to the spindle shaft 22, the fluid supplied to the cylinder chamber 79 is discharged through the fluid passage 54. As a result, the slider 46, the piston 76, and the coupling body 84 are integrally pushed down by the urging force of the disc spring 77. At this time, the ball 43 is pushed by the cylindrical portion 47 and moves radially inward, and a part thereof Is inserted into the recess 61. As a result, the rim / tire assembly 17 is mounted and fixed at a predetermined position of the spindle shaft 22. At this time, the annular protrusion 85 is in contact with the upper surface of the cylindrical portion 40 and transmits the urging force directed downward of the disc spring 77 to the protruding portion 57 via the holder 39 and the ball 43 to press the tapered surfaces 32 and 58 together. .
[0042]
Thus, in this embodiment, the holder 39, the ball 43, the slider 46, the recess 61, the piston 76, and the connecting body 84 are shared by the mounting means and the force applying means. In comparison, the structure is simple and it can be manufactured at low cost. Other configurations and operations are the same as those in the first embodiment.
[0043]
FIG. 4 is a diagram showing a third embodiment of the present invention. In this embodiment, the cylinder member 33 in the first embodiment is inserted into the accommodation hole 31 so as to be movable in the vertical direction, and the slider 46 and the disc springs 52 and 77 are omitted. A retraction hole 48 is formed in the cylinder member 33 that is fitted on the outer periphery. In addition, the piston 76 disposed between the bottom wall of the cylinder member 33 and the partition wall 34 is fixed to the vertical pipe 35, while the cylinder member 33 is disposed below the cylinder member 33 between the bottom wall of the cylinder member 33 and the piston 76. A disc spring 88 is provided for applying an urging force to the head, and a fluid passage 90 is formed in the spindle shaft 22 for supplying and discharging fluid to and from a cylinder chamber 89 formed between the piston 76 and the partition wall 34.
[0044]
Further, in this embodiment, a cylindrical groove 91 having a substantially cylindrical shape coaxial with the vertical pipe 35 is formed on the front end surface (lower end surface) of the protrusion 57, and the outer peripheral surface of the cylindrical groove 91 is axially inner ( A taper surface 92 consisting of a part of a conical surface tapering toward the upper side) is attached to the vertical pipe 35 and the holder 39, and a locking body 94 having a cylindrical portion 93 inserted into the cylindrical groove 91 is attached. An outer peripheral surface of the cylindrical portion 93 is configured by a tapered surface 95 that can come into surface contact with the tapered surface 92 and has the same taper angle.
[0045]
Further, in this embodiment, a through hole 96 for communicating the first fluid passage 37 and the second fluid passage 65 is formed in the locking body 94, and the cylindrical portion of the holder 39 is formed on the inner surface of the upper end portion of the cylinder member 33. An annular protrusion 97 capable of contacting the upper surface of 40 is formed. As described above, in this embodiment, the tapered surfaces are not the inner periphery of the spindle shaft 22 and the outer periphery of the protrusion 57 as in the first embodiment, but the outer periphery and the protrusion of the locking body 94 fixed to the spindle shaft 22. It is formed on the outer periphery of the cylindrical groove 91 formed in 57, and is tapered toward the upper side.
[0046]
In this embodiment, when the rim / tire assembly 17 is mounted and fixed to the spindle shaft 22, the fluid supplied to the cylinder chamber 89 is discharged through the fluid passage 90. As a result, the cylinder member 33 is pushed down by the urging force of the disc spring 88. At this time, the ball 43 is pushed by the cylinder member 33 and moves radially inward, and a part of the ball 43 is inserted into the recess 61. As a result, the rim / tire assembly 17 is mounted and fixed at a predetermined position of the spindle shaft 22. At this time, the urging force directed upward of the disc spring 88 is transmitted to the locking body 94 through the vertical pipe 35, and the tapered surface 95 of the locking body 94 and the tapered surface 92 of the protruding portion 57 are brought into pressure contact with each other.
[0047]
As described above, in this embodiment, the piston 76 and the disc spring 88 are shared by the mounting means and the force applying means. As a result, the structure is simpler and less expensive than the first embodiment. Can be produced. Other configurations and operations are the same as those in the first embodiment.
[0048]
FIG. 5 is a diagram showing a fourth embodiment of the present invention. In this embodiment, a cylindrical portion 100 having a diameter larger than the maximum diameter of the tapered surface 58 is formed on the protruding portion 57 on the proximal end side from the tapered surface 58, and an axial direction (vertical direction) is formed on the outer periphery of the cylindrical portion 100. A key 101 extending to the cylindrical portion 100 is formed at the upper end of the storage hole 31, and the key 101 is inserted into the inner periphery of the annular portion 102. A groove 103 is formed.
[0049]
The key 101 and key groove 103 described above constitute positioning means 104 for positioning and fixing the rotational position of the rim / tire assembly 17 and the spindle shaft 22 as a whole. The rotational direction position of the rim / tire assembly 17 and the spindle shaft 22 at the time of fixing can be made constant at all times, thereby ensuring the communication between the first and second fluid passages and the rim. It is possible to reliably prevent the rim and tire assembly 17 from slipping in the rotational direction with respect to the spindle shaft 22 when the tire assembly 17 rotates.
[0050]
Further, in this embodiment, a ring-shaped locking flange 107 is formed on the outer periphery of the lower end of the connecting portion 60 so that the upper surface tapers upward, and the spindle shaft around the locking flange 107 is formed. 22 are formed with a plurality of cylinder chambers 108 separated in the circumferential direction, and the lower ends of the movable bodies 109 movable in the radial direction are accommodated in the cylinder chambers 108 so that the cylinder chambers 108 are connected to the inner cylinder chambers 108a. It is partitioned into an outer cylinder chamber 108b.
[0051]
Further, locking projections 110 projecting inward in the radial direction are formed on the upper end portions of these movable bodies 109. These locking projections 110 are supplied with fluid to the outer cylinder chamber 108b and are movable body 109. When the gears move synchronously inward in the radial direction, they engage with the upper surface of the locking flange 107 and attach and fix the protrusion 57 (rim / tire assembly 17) to the spindle shaft 22.
[0052]
【The invention's effect】
As described above, according to the present invention, when the rim / tire assembly is mounted and fixed to the mounted member, fluid leakage and rotational slippage between them can be easily prevented.
[Brief description of the drawings]
FIG. 1 is a partially broken front view showing a first embodiment of the present invention.
FIG. 2 is a front sectional view of the vicinity of the mounting means.
FIG. 3 is a front sectional view of the vicinity of the mounting means showing a second embodiment of the present invention.
FIG. 4 is a front sectional view of the vicinity of mounting means showing a third embodiment of the present invention.
FIG. 5 is a front sectional view of the vicinity of the mounting means showing a fourth embodiment of the invention.
[Explanation of symbols]
11 ... Pneumatic tire 13 ... One side bead
14 ... Other side bead 15 ... One side rim
16 ... Rim on the other side 17 ... Rim and tire assembly
22 ... Mounted member 28 ... Conveying means
32, 58 ... Tapered surface 37 ... First fluid passage
39… Holder 42… Ball hole
43… Ball 46… Slider
61 ... dent 62 ... mounting means
65 ... Second fluid passage 66 ... Open / close valve
72 ... Opening member 81 ... Force applying means
104 ... Positioning means D ... Diameter
t ... Thickness

Claims (3)

A pneumatic tire, a one-side rim on which one side bead portion of the pneumatic tire is seated, and another side bead portion on which the pneumatic tire is seated and detachably connected to the one-side rim A step of carrying a rim / tire assembly composed of a side rim into a mounted member, and mounting and fixing the carried rim / tire assembly at a predetermined position of the mounted member by a mounting means; The first fluid passage and the second fluid passage formed in the rim / tire assembly are communicated, and fluid is passed between the one side, the other side rim and the pneumatic tire through the first and second fluid passages. A rim / tire comprising: a guiding step; and a step of switching an on-off valve provided in the second fluid passage to a closed state when the rim / tire assembly is separated from a mounted member by a conveying means. How to install the assembly . A pneumatic tire, a one-side rim on which one side bead portion of the pneumatic tire is seated, and another side bead portion on which the pneumatic tire is seated and detachably connected to the one-side rim Conveying means for carrying a rim / tire assembly comprising a side rim into a mounted member, mounting means for mounting and fixing the carried rim / tire assembly at a predetermined position of the mounted member, and a rim / tire assembly And a second fluid passage for guiding fluid from the first fluid passage between the one side, the other rim and the pneumatic tire when communicating with the first fluid passage formed in the mounted member. A mounting device for a rim / tire assembly, wherein the second fluid passage is provided with an opening / closing valve that is closed when the rim / tire assembly is detached from the mounted member by the conveying means. Rim and tire assembly mounting . Before SL to the mounted member, when said rim tire assembly is mounted fixed to said mounting member, the mounting of the rim tire assembly of the opening member is provided according to claim 2, wherein switching the on-off valve in an open state apparatus.

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